// This file is part of OpenTSDB.
// Copyright (C) 2017 TeleDB Development Group.
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 2.1 of the License, or (at your
// option) any later version.  This program is distributed in the hope that it
// will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser
// General Public License for more details.  You should have received a copy
// of the GNU Lesser General Public License along with this program.  If not,
// see <http://www.gnu.org/licenses/>.
package net.opentsdb.utils.expiringmap;

/**
 * A listener for expired object events.
 * 
 * @param <K> Key type
 * @param <V> Value type
 */
public interface ExpirationListener<K, V> {
  /**
   * Called when a map entry expires.
   * 
   * @param key Expired key
   * @param value Expired value
   */
  void expired(K key, V value);
}